hydrogen (and helium)
the first row (or period) contains two element: hydrogen and helium both of which are nonmetals.
Helium Helium
Helium is an element.
helium is in row 1 (or better period 1)
In any row of the periodic table, the group 8 element - the noble gas - is the least reactive. The known group 8 elements are Helium, Neon, Argon, Krypton, Xenon and Radon
It is a element
Helium is an element. It is a noble gas. It is in the 18th period.
The element symbol for helium is He
Helium is an element.
Helium is an element.
Helium is an element.